C# JsonTextWriter.WriteEndObject方法代码示例

        private static string toJSON(SqlDataReader rdr)
        {
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            JsonWriter jsonWriter = new JsonTextWriter(sw);
            jsonWriter.WriteStartArray();
            while (rdr.Read())
            {
                int fieldcount = rdr.FieldCount; // count how many columns are in the row
                object[] values = new object[fieldcount]; // storage for column values
                rdr.GetValues(values); // extract the values in each column
                jsonWriter.WriteStartObject();
                for (int index = 0; index < fieldcount; index++)
                {

                    string colName = rdr.GetName(index);
                    object value = values[index];
                    jsonWriter.WritePropertyName(colName);

                    if (value == DBNull.Value)
                        value = "";
                    else if (colName.Contains("date") && !colName.Contains("by"))
                        value = String.Format("{0:MM/dd/yyyy HH:mm tt}", value);

                    jsonWriter.WriteValue(value);
                }
                jsonWriter.WriteEndObject();
            }
            jsonWriter.WriteEndArray();

            return sb.ToString();
        }

        public string Serialize()
        {
            var sb = new StringBuilder();
            var sw = new StringWriter(sb);

            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                jsonWriter.Formatting = Formatting.Indented;

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("public");
                jsonWriter.WriteValue(true);

                jsonWriter.WritePropertyName("files");

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName(File);

                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("content");
                jsonWriter.WriteValue(Code);
                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndObject();
            }

            return sb.ToString();
        }

        /// <summary>
        /// Convert parameter list to json object
        /// </summary>
        public static string parameterFieldMapJson(parameters parms, string ProjectID, string QueryID)
        {
            StringWriter sw = new StringWriter();
            JsonTextWriter json = new JsonTextWriter(sw);

            json.WriteStartObject();
            json.WritePropertyName("results");
            json.WriteStartArray();
            json.WriteStartObject();
            // ProjectID and QueryID
            json.WritePropertyName("ProjectID");
            json.WriteValue(ProjectID);
            json.WritePropertyName("QueryID");
            json.WriteValue(QueryID);

            json.WritePropertyName("parameters");
            json.WriteRawValue(JsonConvert.SerializeObject(parms));

            json.WriteEndObject();
            json.WriteEndArray();
            json.WriteEndObject();

            json.Flush();
            sw.Flush();

            return sw.ToString();
        }

 /// <summary>
 /// Serializes <see cref="Graphic"/> into JSON string.
 /// </summary>
 /// <param name="graphic">graphic to serialize into JSON.</param>
 /// <returns>string representation of the JSON object.</returns>
 public static string ToJson(this  Graphic graphic)
 {
     StringBuilder sb = new StringBuilder();
     using (StringWriter sw = new StringWriter(sb))
     {
         using (JsonWriter jw = new JsonTextWriter(sw))
         {
             if (graphic.Geometry != null)
             {
                 jw.WriteStartObject();
                 jw.WritePropertyName("geometry");
                 // Gets the JSON string representation of the Geometry.
                 jw.WriteRawValue(graphic.Geometry.ToJson());
                 jw.WriteEndObject();
             }
             if (graphic.Attributes.Count > 0)
             {
                 jw.WriteStartObject();
                 foreach (var item in graphic.Attributes)
                 {
                     jw.WritePropertyName(item.Key);
                     jw.WriteValue(item.Value);
                 }
                 jw.WriteEndObject();
             }
         }
         return sb.ToString();
     }
 }

    public static string DataTableToJSON(DataTable dt, string dtName)
    {
        StringBuilder sb = new StringBuilder();
        StringWriter sw = new StringWriter(sb);

        using (JsonWriter jw = new JsonTextWriter(sw))
        {
            JsonSerializer ser = new JsonSerializer();
            jw.WriteStartObject();
            jw.WritePropertyName(dtName);
            jw.WriteStartArray();
            foreach (DataRow dr in dt.Rows)
            {
                jw.WriteStartObject();

                foreach (DataColumn dc in dt.Columns)
                {
                    jw.WritePropertyName(dc.ColumnName);
                    ser.Serialize(jw, dr[dc].ToString());
                }

                jw.WriteEndObject();
            }
            jw.WriteEndArray();
            jw.WriteEndObject();

            sw.Close();
            jw.Close();

        }

        return sb.ToString();
    }

        /// <summary>
        /// Generate the json output for the page.
        /// </summary>
        /// <param name="page">
        /// The page.
        /// </param>
        /// <returns>
        /// The <see cref="string"/>.
        /// </returns>
        public static string GenerateJson(IContent page)
        {
            string json;

            List<KeyValuePair<string, string>> propertyValues = page.GetPropertyValues();

            StringBuilder stringBuilder = new StringBuilder();

            using (StringWriter sw = new StringWriter(stringBuilder, CultureInfo.InvariantCulture))
            {
                JsonWriter jsonWriter = new JsonTextWriter(sw) { Formatting = Formatting.Indented };

                jsonWriter.WriteStartObject();

                jsonWriter.WritePropertyName(page.Name);

                jsonWriter.WriteStartObject();

                foreach (KeyValuePair<string, string> content in propertyValues)
                {
                    jsonWriter.WritePropertyName(content.Key);
                    jsonWriter.WriteValue(TextIndexer.StripHtml(content.Value, content.Value.Length));
                }

                jsonWriter.WriteEndObject();

                jsonWriter.WriteEndObject();

                json = sw.ToString();
            }

            return json;
        }

        public String ToJSONRepresentation()
        {
            StringBuilder sb = new StringBuilder();
            JsonWriter jw = new JsonTextWriter(new StringWriter(sb));

            jw.Formatting = Formatting.Indented;
            jw.WriteStartObject();
            jw.WritePropertyName(this._description);
            jw.WriteStartArray();

            foreach(MailStructure mail in this._mailStructures)
            {
                jw.WriteStartObject();
                jw.WritePropertyName("Id");
                jw.WriteValue(mail.Id);
                jw.WritePropertyName("Uuid");
                jw.WriteValue(mail.Uuid);
                jw.WritePropertyName("MailDate");
                jw.WriteValue(mail.MailDate);
                jw.WritePropertyName("From");
                jw.WriteValue(mail.From);
                jw.WritePropertyName("Subject");
                jw.WriteValue(mail.Subject);
                jw.WritePropertyName("Body");
                jw.WriteValue(mail.Body);
                jw.WritePropertyName("AttachmentExist");
                jw.WriteValue((mail.AttachmentExist ? "1" : "0"));
                jw.WritePropertyName("AttachmentFiles");
                jw.WriteValue(mail.AttachmentFiles);
                jw.WriteEndObject();
            }
            jw.WriteEndArray();
            jw.WriteEndObject();
            return sb.ToString();
        }

        public static void WriteAsJson([NotNull] this LayoutBuilder layoutBuilder, [NotNull] TextWriter writer)
        {
            var output = new JsonTextWriter(writer)
            {
                Formatting = Formatting.Indented
            };

            output.WriteStartObject("Layout");
            output.WriteStartArray("Devices");

            foreach (var deviceBuilder in layoutBuilder.Devices)
            {
                output.WriteStartObject();
                output.WritePropertyStringIf("Name", deviceBuilder.DeviceName);
                output.WritePropertyStringIf("Layout", deviceBuilder.LayoutItemPath);

                output.WriteStartArray("Renderings");

                foreach (var renderingBuilder in deviceBuilder.Renderings.Where(r => r.ParentRendering == null))
                {
                    WriteAsJson(output, deviceBuilder, renderingBuilder);
                }

                output.WriteEndArray();
                output.WriteEndObject();
            }

            output.WriteEndArray();
            output.WriteEndObject();
        }

        /// <summary>
        /// Serialize this phase to JSON.
        /// </summary>
        /// <returns>The phase as a JSON string.</returns>
        public string ToJsonString()
        {
            /*
             * NB: JsonTextWriter is guaranteed to close the StringWriter
             * https://github.com/JamesNK/Newtonsoft.Json/blob/master/Src/Newtonsoft.Json/JsonTextWriter.cs#L150-L160
             */
            var sb = new StringBuilder();
            var sw = new StringWriter(sb);
            using (JsonWriter writer = new JsonTextWriter(sw))
            {
                writer.WriteStartObject();
                writer.WritePropertyName(PhaseType);

                // phase start
                writer.WriteStartObject();

                WriteJson(writer);
                writer.WriteProperty("keep", keep);
                writer.WriteEndObject();

                // phase end
                writer.WriteEndObject();
            }

            return sb.ToString();
        }

	private string CreateStatusText()
	{
		using (var sw = new StringWriter())
		using (var jsonWriter = new JsonTextWriter(sw))
		{
			jsonWriter.WriteStartObject();
			{
				// Login
				jsonWriter.WritePropertyName("login");
				jsonWriter.WriteStartObject();
				{
					jsonWriter.WritePropertyName("port");
					jsonWriter.WriteValue(LoginServer.Instance.Conf.Login.Port);
				}
				jsonWriter.WriteEndObject();

				// Servers
				jsonWriter.WritePropertyName("servers");
				jsonWriter.WriteStartObject();
				{
					foreach (var server in LoginServer.Instance.ServerList.List)
					{
						// Channels
						jsonWriter.WritePropertyName(server.Name);
						jsonWriter.WriteStartObject();
						{
							foreach (var channel in server.Channels)
							{
								// Channel
								jsonWriter.WritePropertyName(channel.Key);
								jsonWriter.WriteStartObject();
								{
									jsonWriter.WritePropertyName("host");
									jsonWriter.WriteValue(channel.Value.Host);

									jsonWriter.WritePropertyName("port");
									jsonWriter.WriteValue(channel.Value.Port);

									jsonWriter.WritePropertyName("online");
									jsonWriter.WriteValue(channel.Value.Users);

									jsonWriter.WritePropertyName("onlineMax");
									jsonWriter.WriteValue(channel.Value.MaxUsers);

									jsonWriter.WritePropertyName("state");
									jsonWriter.WriteValue(channel.Value.State);
								}
								jsonWriter.WriteEndObject();
							}
						}
						jsonWriter.WriteEndObject();
					}
				}
				jsonWriter.WriteEndObject();
			}
			jsonWriter.WriteEndObject();

			return sw.ToString();
		}
	}

        public bool Start(string context)
        {
            this.context = context;
            string uri = baseURI + @"start/";
            string method = "POST";
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
 
            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                jsonWriter.Formatting = Formatting.Indented;
 
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("context");
                jsonWriter.WriteValue(this.context);
                jsonWriter.WritePropertyName("participants");
                jsonWriter.WriteStartArray();
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("name");
                // use the current window user
                jsonWriter.WriteValue(Environment.UserName);
                jsonWriter.WritePropertyName("id");
                // use the computer name + windows user name
                jsonWriter.WriteValue(Environment.MachineName + "-" + Environment.UserName);
                jsonWriter.WriteEndObject();
                jsonWriter.WriteEnd();
                jsonWriter.WriteEndObject();
            }
            string json = sb.ToString();
            
            HttpWebRequest req = WebRequest.Create(uri) as HttpWebRequest;
            req.KeepAlive = false;
            req.Method = method;
            byte[] buffer = Encoding.ASCII.GetBytes(json);
            req.ContentLength = buffer.Length;
            req.ContentType = "application/json";
            Stream PostData = req.GetRequestStream();
            PostData.Write(buffer, 0, buffer.Length);
            PostData.Close();

            HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
            StreamReader tr = new StreamReader(resp.GetResponseStream());
            json = tr.ReadToEnd();            
            Dictionary<string, string> respValues = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
            if (respValues.ContainsKey("status") && respValues["status"] == "success")
            {
                this.dialogueID = respValues["dlg_id"];
                this.IsRunning = true;
                return true;
            }
            return false;
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            Response.Clear();

             var oSB = new StringBuilder();
             var oSW = new StringWriter(oSB);

             using (JsonWriter oWriter = new JsonTextWriter(oSW))
             {
            oWriter.Formatting = Formatting.Indented;

            oWriter.WriteStartObject();

            if (IsAuthenticated && ApplicationContext.IsStaff)
            {
               oWriter.WritePropertyName("results");
               oWriter.WriteStartArray();

               if (!string.IsNullOrEmpty(Request.QueryString["q"]))
               {
                  var sQuery = Request.QueryString["q"];
                  DataAccess.Log = new DebugTextWriter();

                  var oResults = DataAccess.fn_Producer_GetCustomerLookup();
                  oResults = oResults.Where(row => (row.FirstName + " " + row.LastName + " (" + row.Username + ")").Contains(sQuery))
                                     .Distinct().Take(30);

                  foreach (var oResult in oResults)
                  {
                     oWriter.WriteStartObject();
                     oWriter.WritePropertyName("id");
                     oWriter.WriteValue(oResult.MPUserID.ToString());
                     oWriter.WritePropertyName("name");
                     oWriter.WriteValue(string.Format("{0} {1} ({2})", oResult.FirstName, oResult.LastName, oResult.Username));
                     oWriter.WriteEndObject();
                  }

                  oWriter.WriteEnd();
               }
            }

            oWriter.WriteEndObject();
             }

             Response.ContentType = "application/json";
             Response.Write(oSB.ToString());
             Response.End();
        }

        public override bool Execute()
        {
            if (Items.Length == 0)
                throw new ArgumentException("The provided items contained zero entries.");

            if (!Directory.Exists(Path.GetDirectoryName(JsonFileName)))
                Directory.CreateDirectory(Path.GetDirectoryName(JsonFileName));

            JsonSerializer jsonSerializer = new JsonSerializer();
            using (StreamWriter streamWriter = new StreamWriter(JsonFileName))
            {
                using (JsonTextWriter jsonWriter = new JsonTextWriter(streamWriter))
                {
                    jsonWriter.Formatting = Formatting.Indented;

                    if (Items.Length > 1)
                        jsonWriter.WriteStartArray();

                    foreach (ITaskItem item in Items)
                    {
                        var customMd = item.CloneCustomMetadata();
                        jsonWriter.WriteStartObject();
                        foreach (var key in customMd.Keys)
                        {
                            var mdString = key.ToString();
                            var mdValue = customMd[key].ToString();

                            jsonWriter.WritePropertyName(mdString);

                            // if the value is surrounded in square brackets it's meant to be an array.
                            // split the value into its respective chunks and write it into a JSON array.
                            if (mdValue.Length > 0 && mdValue[0] == '[' && mdValue[mdValue.Length - 1] == ']')
                            {
                                mdValue = mdValue.Substring(1, mdValue.Length - 2);
                                jsonWriter.WriteStartArray();

                                var parts = mdValue.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
                                foreach (var part in parts)
                                    jsonWriter.WriteValue(part);

                                jsonWriter.WriteEndArray();
                            }
                            else
                            {
                                jsonWriter.WriteValue(mdValue);
                            }
                        }

                        jsonWriter.WriteEndObject();
                    }

                    if (Items.Length > 1)
                        jsonWriter.WriteEndArray();

                    Log.LogMessage(MessageImportance.High, "Writing {0}.", JsonFileName);
                }
            }

            return true;
        }

        //https://webServiceURL/version/devices/deviceLibraryIdentifier/registrations/passTypeIdentifier?passesUpdatedSince=tag
        public HttpResponseMessage Get(string version, string deviceLibraryIdentifier, string passTypeIdentifier, HttpRequestMessage request)
        {
            //List<string> updatedSerialNumbers = new List<string>();
            //updatedSerialNumbers.Add("121212111");

            //Dictionary<string, string> outputDictionary = new Dictionary<string, string>();
            //outputDictionary.Add("lastUpdated", "21/07/2012");
            //outputDictionary.Add("serialNumbers", JsonConvert.SerializeObject(updatedSerialNumbers));

            var response = new HttpResponseMessage(HttpStatusCode.OK);
            //string json = JsonConvert.SerializeObject(outputDictionary);


            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);

            using (JsonWriter writer = new JsonTextWriter(sw))
            {
                writer.Formatting = Formatting.Indented;

                writer.WriteStartObject();
                writer.WritePropertyName("lastUpdated");
                writer.WriteValue("21/07/2012");
                writer.WritePropertyName("serialNumbers");
                writer.WriteStartArray();
                writer.WriteValue("121212111");
                writer.WriteEndArray();
                writer.WriteEndObject();
            }

            response.Content = new StringContent(sb.ToString(), Encoding.UTF8, "application/json");

            return response;
        }

		//JsonWriter writer = new JsonTextWriter();
		protected static string BasicRequest(int requestID, string method, string sessionID, params string[] parameters)
		{
			StringBuilder sb = new StringBuilder();
			StringWriter sw = new StringWriter(sb);

			using (JsonWriter writer = new JsonTextWriter(sw))
			{
				writer.Formatting = Formatting.Indented;

				writer.WriteStartObject();
				writer.WritePropertyName("jsonrpc");
				writer.WriteValue("2.0");
				writer.WritePropertyName("id");
				writer.WriteValue(requestID);
				writer.WritePropertyName("method");
				writer.WriteValue(method);
				writer.WritePropertyName("params");
				writer.WriteStartArray();
				writer.WriteValue(sessionID);
				foreach (var p in parameters)
					writer.WriteValue(p);
				writer.WriteEndArray();
				writer.WriteEndObject();
                return sb.ToString();
				//return sb.ToString().Replace("\n","");
			}
		}